Porsche 991.1 / 991.2 Turbo / Turbo S SOUL Competition X-Pipe Exhaust System

Product Description

The SOUL Competition X-Pipe Exhaust System is a complete catless performance exhaust system for the Porsche 991.1 and 991.2 911 Turbo / Turbo S, engineered for maximum exhaust flow, substantial weight reduction, increased turbocharger sound, and a dramatically more aggressive flat-six exhaust note.

SOUL developed the Competition system around full 3-inch T304L stainless-steel piping, a proprietary X-pipe mixing chamber, and four straight-through race resonators. The X-pipe blends the opposing exhaust streams to improve flow characteristics and produce a smoother, more refined exhaust note, while the quad resonators reduce undesirable drone without introducing the restriction of conventional mufflers.

The Competition configuration removes the factory catalytic converters, substantially reducing post-turbo exhaust restriction and allowing significantly more turbocharger and engine sound to reach the driver.

At approximately 26 lbs, the SOUL Competition X-Pipe weighs approximately 19 lbs / 8.6 kg less than the roughly 45-lb factory exhaust components it replaces.

Owners may reuse the factory exhaust tips on most Turbo and Turbo S applications or select SOUL's Signature Satin Straight Cut or Signature Satin GT2 Style T316L stainless-steel tips.

FITMENT:

• Fits 2013–2016 Porsche 991.1 911 Turbo

• Fits 2013–2016 Porsche 991.1 911 Turbo S

• Fits 2017–2019 Porsche 991.2 911 Turbo

• Fits 2017–2019 Porsche 991.2 911 Turbo S

• Fits 2018 Porsche 991.2 911 Turbo S Exclusive Series when equipped with compatible SOUL exhaust tips

• SOUL specifies fitment for all 991.1 and 991.2 Turbo / Turbo S vehicles

• Factory exhaust tips may be reused on most applications

• Factory tips cannot be reused on the 911 Turbo S Exclusive Series

• Compatible with PDK-equipped Turbo / Turbo S applications

DETAILS:

• Complete Competition X-Pipe Exhaust System

• Completely catless

• Removes the factory catalytic converters

• Removes the restrictive factory rear exhaust components

• Full 3-inch exhaust piping

• Proprietary X-pipe mixing-chamber design

• Designed to reduce post-turbo backpressure

• Designed to support high-horsepower applications

• Four straight-through race resonators

• Full-metal resonator packing for high-temperature durability

• Race resonators help reduce undesirable drone

• Increased turbocharger spool and turbine sound

• Increased flat-six exhaust volume

• Increased pops and burbles during deceleration

• Non-valved performance architecture

• Approximately 26 lbs / 11.8 kg system weight

• Factory exhaust components approximately 45 lbs / 20.4 kg

• Approximately 19 lbs / 8.6 kg of weight savings

• Approximately 42% lighter than the factory components being replaced

• Main exhaust constructed from mandrel-bent T304L stainless steel

• 3-inch diameter

• .065-inch wall thickness

• Laser-cut mounting brackets

• Optional SOUL tips manufactured from T316L stainless steel

• Mikalor Supra Heavy-Duty clamps included with applicable SOUL tip configurations

• Direct bolt-on installation

• Installation instructions included

• Fixture-tested before shipment

• Foam-packed following final inspection

• Designed and manufactured by SOUL Performance Products

• Backed by SOUL's Lifetime Warranty for street and track use

COMPLETE CATLESS COMPETITION EXHAUST

The Competition X-Pipe is considerably more aggressive than a conventional rear muffler replacement.

This system removes the factory catalytic converters as part of the complete exhaust configuration.

Eliminating the catalysts reduces one of the largest restrictions immediately downstream of the turbochargers and provides:

• Reduced post-turbine backpressure

• Greater exhaust-flow capacity

• Increased turbocharger sound

• Greater engine character

• Increased tuning potential

• Reduced exhaust-system weight

• Significantly increased overall volume

This is SOUL's competition-oriented configuration for owners prioritizing flow, sound, and performance rather than emissions equipment retention.

FULL 3-INCH EXHAUST ARCHITECTURE

Supporting increased power was a major consideration during SOUL's development process.

The system therefore uses:

3-inch-diameter exhaust tubing

through the performance exhaust architecture.

This large flow path helps accommodate the exhaust mass flow associated with:

• Factory turbochargers

• ECU tuning

• Increased boost

• Intake upgrades

• Intercooler upgrades

• Turbocharger upgrades

• Higher-output engine combinations

The 3-inch architecture makes the system particularly appropriate for vehicles expected to progress beyond stock output.

PROPRIETARY X-PIPE DESIGN

SOUL experimented with a mixing chamber during development of the 991 Turbo exhaust.

Using 3D CAD analysis across a range of pressure and temperature conditions, SOUL observed a general increase in exhaust velocity downstream of its mixing chamber.

The resulting proprietary X-pipe is designed to provide:

• Improved exhaust-stream blending

• Reduced backpressure

• Improved exhaust velocity

• Greater high-horsepower flow capacity

• Smoother exhaust character

• Improved sound quality

Rather than keeping the left and right banks completely isolated, the X-pipe allows the two exhaust streams to interact before exiting the vehicle.

QUAD RACE RESONATORS

A completely catless 3-inch Turbo exhaust can easily become excessively harsh or develop objectionable cabin resonance.

SOUL therefore incorporates:

Four straight-through race resonators

into the Competition X-Pipe.

The resonators use a full-metal packing design selected for durability under sustained high exhaust temperatures.

Their purpose is to reduce undesirable frequencies without significantly restricting the primary exhaust path.

This helps provide:

• Reduced drone

• Smoother overall sound

• More refined exhaust character

• Straight-through exhaust flow

• High-temperature durability

The Competition system remains a very aggressive exhaust, but the resonators prevent it from simply becoming an uncontrolled straight-pipe configuration.

NON-VALVED PERFORMANCE DESIGN

The Competition X-Pipe is a non-valved exhaust system.

It does not provide a dedicated valves-closed quiet route like SOUL's Valved Exhaust System.

The freer-flowing Competition exhaust path is therefore active continuously.

Vehicle drive modes can still affect engine behavior, throttle calibration, transmission behavior, and factory-generated burbles, but they do not convert this exhaust into a separate quiet flow path.

Customers wanting active exhaust-volume control should consider SOUL's Valved Exhaust System instead.

SOUND CHARACTER

SOUL developed the Competition X-Pipe to deliver significantly more of the 991 Turbo's engine and turbocharger character.

Expect:

• Dramatically increased exhaust volume

• Significantly more turbo spool

• More audible turbine sound

• Greater flat-six presence

• Stronger full-throttle character

• Increased acceleration sound

• More aggressive high-RPM exhaust note

• Pronounced crackles during throttle lift

• Increased burbles during deceleration

• More exhaust presence inside the cabin

Despite the increased volume, SOUL specifically engineered the quad race resonators to keep the tone refined rather than excessively harsh.

COMFORT MODE BEHAVIOR

SOUL notes that the vehicle's Comfort-oriented calibration reduces the amount of burbling and crackling compared with more aggressive driving modes.

This provides some variation in character through the vehicle's engine and transmission programming even though the Competition X-Pipe itself is not valved.

The exhaust will remain considerably more audible than stock in all modes.

TURBOCHARGER SOUND

Removing the factory catalytic converters makes a substantial difference in audible turbocharger activity.

The catalyst substrates normally suppress much of the:

• Turbo spool

• Turbine whistle

• Mechanical turbocharger character

before those sounds reach the rear of the vehicle.

The Competition X-Pipe removes that attenuation, allowing substantially more turbocharger sound to reach the cabin and surrounding environment.

POST-TURBO BACKPRESSURE REDUCTION

Reducing restriction after a turbocharger can improve the environment into which the turbine discharges.

The Competition system removes the factory catalyst substrates and replaces the restrictive factory exhaust architecture with large 3-inch piping.

This provides additional exhaust-flow capacity for both stock and modified cars.

The benefit becomes increasingly important as:

• Boost pressure increases

• Airflow increases

• Engine output increases

• Turbochargers are upgraded

DYNO-TESTED HIGH-POWER CAPABILITY

SOUL performed third-party Mustang Dyno testing at R/T Tuning with the Competition X-Pipe already installed.

The vehicle produced:

542 whp / 629 lb-ft

with the SOUL Competition X-Pipe and baseline calibration.

Adding a:

COBB Accessport base map

increased output to approximately:

581 whp / 733 lb-ft

A subsequent:

Custom Protune

produced approximately:

606 whp / 749 lb-ft

These results demonstrate the Competition X-Pipe's ability to support substantial power and torque as ECU calibration becomes more aggressive.

IMPORTANT DYNO CONTEXT

The published dyno session is not an exhaust-only before-and-after test.

The SOUL Competition X-Pipe was already installed for the 542 whp / 629 lb-ft baseline pull.

The progression was:

SOUL Competition X-Pipe + baseline calibration:
542 whp / 629 lb-ft

SOUL Competition X-Pipe + COBB base map:
581 whp / 733 lb-ft

SOUL Competition X-Pipe + custom Protune:
606 whp / 749 lb-ft

The data therefore demonstrates that the exhaust can support a high-output tuned configuration, but it does not establish a standalone horsepower or torque gain from the exhaust itself.

DasMotoring does not advertise a numerical Competition X-Pipe-only horsepower gain.

ECU TUNING

An ECU tune is not required for the exhaust system to physically bolt onto the vehicle.

However, because the Competition system removes the factory catalytic converters, catalyst-monitoring faults are likely.

An appropriate closed-course ECU calibration can:

• Address catalyst-related diagnostic faults

• Take greater advantage of reduced exhaust restriction

• Optimize higher boost targets

• Support additional airflow modifications

• Improve overall tuned performance

CHECK ENGINE LIGHT

Because the Competition X-Pipe removes the catalytic converters, SOUL states that a check engine light is likely on a vehicle retaining normal catalyst monitoring.

This distinguishes the Competition system from SOUL's catted Sport X-Pipe Exhaust System.

Customers using the Competition exhaust on a closed-course vehicle should plan accordingly when determining the vehicle's calibration.

19-LB WEIGHT REDUCTION

SOUL publishes the following weights:

Factory Exhaust Components:
Approximately 45 lbs / 20.4 kg

SOUL Competition X-Pipe Exhaust:
Approximately 26 lbs / 11.8 kg

Weight Savings:
Approximately 19 lbs / 8.6 kg

That represents approximately a:

42% reduction

in the mass of the components being replaced.

Because the majority of this exhaust hardware sits behind the rear axle, the reduction is particularly useful on a rear-engined 911.

T304L STAINLESS EXHAUST CONSTRUCTION

The main exhaust assembly is manufactured from:

Mandrel-bent T304L stainless steel

with:

3-inch diameter tubing

and:

.065-inch wall thickness

This construction provides:

• High-temperature durability

• Corrosion resistance

• Structural strength

• Consistent exhaust geometry

• Long service life

• Suitability for repeated track use

T316L STAINLESS-STEEL EXHAUST TIPS

SOUL's current optional exhaust tips are manufactured from T316L stainless steel.

T316L provides excellent corrosion resistance and is well suited to visible exhaust components exposed to:

• Heat

• Condensation

• Road debris

• Moisture

• Environmental contamination

Customers may alternatively retain the factory exhaust tips where compatible.

TIP OPTIONS

Three configurations are currently available:

Reuse OEM Tips

Retains the factory Porsche exhaust outlets for an OEM exterior appearance.

Signature Satin Straight Cut Single Wall

A clean motorsport-inspired straight-cut design finished in SOUL's Signature Satin.

Signature Satin GT2 Style Single Wall

A more aggressive outlet inspired by Porsche's GT2-style exhaust appearance.

911 TURBO S EXCLUSIVE SERIES

The 911 Turbo S Exclusive Series cannot reuse its factory exhaust tips with this system.

Exclusive Series customers must select one of SOUL's compatible tip configurations:

• Signature Satin Straight Cut Single Wall

• Signature Satin GT2 Style Single Wall

This restriction should be confirmed when ordering for an Exclusive Series vehicle.

MIKALOR SUPRA HEAVY-DUTY CLAMPS

SOUL supplies Mikalor Supra Heavy-Duty clamps to secure its optional exhaust tips.

These clamps provide:

• High clamping force

• Durable stainless-steel construction

• Secure tip retention

• Adjustability during installation

DIRECT BOLT-ON INSTALLATION

The Competition X-Pipe is designed as a direct bolt-on system.

Each assembly is:

• Manufactured in dedicated fixtures

• Test-fitted for dimensional consistency

• Quality inspected

• Foam packed before shipment

Detailed installation instructions are included.

No cutting or welding is required as part of normal installation.

COMPETITION X-PIPE VS. SPORT X-PIPE

Competition X-Pipe

• Starts at $3,995

• Completely catless

• Full 3-inch architecture

• Quad race resonators

• Approximately 26 lbs

• Saves approximately 19 lbs

• Maximum turbo sound

• Maximum exhaust volume

• Greater catalyst-related diagnostic considerations

• Competition-oriented configuration

Sport X-Pipe

• Retains performance catalytic converters

• Full performance X-pipe architecture

• Quad race resonators

• More street-oriented

• Lower likelihood of catalyst-related diagnostic faults

• More exhaust-system weight due to catalysts

• Higher purchase price

The Competition X-Pipe is the more aggressive choice for vehicles where retaining catalytic converters is not required.

COMPETITION X-PIPE VS. REAR X-PIPE EXHAUST

SOUL also offers a standalone rear X-Pipe Exhaust that retains the existing catalyst assemblies.

The Competition X-Pipe differs by combining the freer-flowing rear exhaust architecture with catalyst removal.

This provides:

• Greater overall exhaust-flow potential

• Greater turbocharger sound

• Greater weight reduction

• More aggressive exhaust character

while introducing the emissions and diagnostic considerations associated with removing the factory catalytic converters.

EMISSIONS / COMPETITION USE NOTE

The SOUL Competition X-Pipe Exhaust System removes the factory catalytic converters.

This product is not CARB certified and SOUL specifies it for off-road / competition use only.

Use on emissions-controlled vehicles operated on public roads may violate applicable federal, state, or local regulations.

Customers are responsible for determining the legality of their vehicle configuration and intended use.